OK Lets start:
1.) Do a Online Scan of PC. Here
http://www.kaspersky.com/virusscanner
2.) Update your Virus definitions.
3.) Remove Kelogger from System Startup. Using MSCONFIG utility.
4.) Again do a full system scan.
5.) Scan your PC with Ad Aware and Spybot Search and destroy.
6.) Do a Virus scan of PC using Avast Antivirus for Dos.
I think this all should solve the problem.
Let us know If it do...